diff --git a/Makefile b/Makefile
index a044e72..31fb38d 100644
--- a/Makefile
+++ b/Makefile
@@ -66,6 +66,9 @@ kubernetes.install: $(OCTOPUS_TOOL)
 export ROOK_SYSTEM_NAMESPACE ?= rook-ceph
 export ROOK_NAMESPACE ?= rook-ceph
 include scripts/rook/Makefile
+.PHONY: rook
+rook:
+	@ $(MAKE) rook.help
 
 
 ##
diff --git a/README.md b/README.md
index 2814b6e..21bdfaf 100644
--- a/README.md
+++ b/README.md
@@ -26,11 +26,14 @@ Prerequisites
 ### Known dependencies
  - bash
  - curl
+ - docker
  - libvirt-client
  - libvirt-daemon
  - libvirt-daemon-qemu
  - libvirt-python - https://pypi.org/project/libvirt-python/
+ - kubectl
  - python3
+ - python3-PyYAML
  - qemu
  - qemu-kvm
  - jq
diff --git a/_default-dev-settings b/_default-dev-settings
index 6c9f2b6..477dedf 100644
--- a/_default-dev-settings
+++ b/_default-dev-settings
@@ -6,7 +6,8 @@
 
 # Prevent cluster collisions in shared environments with a resource name prefix
 # Can safely be commented-out for local libvirt use
-export CLUSTER_PREFIX="$USER-"
+export USER=$(whoami || echo "default-user")
+export CLUSTER_PREFIX="${USER}-"
 
 # Number of Kubernetes master and worker nodes to create for the dev cluster
 # One-node clusters should be a single master with no workers.
diff --git a/developer-settings b/developer-settings
index 23fe486..88faef0 100644
--- a/developer-settings
+++ b/developer-settings
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
-source _default-dev-settings
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+source "${SCRIPT_DIR}/_default-dev-settings"
 
 # Add your own overrides to the default-dev-settings here
 # examples:
diff --git a/scripts/libvirt/setup.py b/scripts/libvirt/setup.py
index d156f30..39d29a1 100644
--- a/scripts/libvirt/setup.py
+++ b/scripts/libvirt/setup.py
@@ -25,6 +25,11 @@
 # networks
 #
 
+if CLUSTER_PREFIX.startswith('-'):
+    # libvirt dnsmasq does not allow the domain to start with a '-' char
+    print("CLUSTER_PREFIX cannot start with a '-' char", file=sys.stderr)
+    exit(1)
+
 FULL_NET_DOMAIN_NAME = CLUSTER_PREFIX + NET_DOMAIN_NAME
 
 k8sNet = network.LvmNetwork( # k8s network / main network
diff --git a/scripts/libvirt/variables.py b/scripts/libvirt/variables.py
index cb17647..6a254a2 100644
--- a/scripts/libvirt/variables.py
+++ b/scripts/libvirt/variables.py
@@ -6,7 +6,7 @@
 #
 
 # this can be set to allow multiple clusters on one URI without collisions
-CLUSTER_PREFIX = os.getenv("CLUSTER_PREFIX", "")
+CLUSTER_PREFIX = os.getenv("CLUSTER_PREFIX", os.getlogin() + '-')
 
 LIBVIRT_URI                 = os.getenv("LIBVIRT_URI", "qemu:///system")
 LIBVIRT_IMAGE_DOWNLOAD_POOL = os.getenv("LIBVIRT_IMAGE_DOWNLOAD_POOL", "default")
diff --git a/scripts/rook/Makefile b/scripts/rook/Makefile
index 618c741..200e3f4 100644
--- a/scripts/rook/Makefile
+++ b/scripts/rook/Makefile
@@ -134,7 +134,7 @@ rook.uninstall: rook.config-branch-file.%
 	@ $(MAKE) rook.showinfo
 	@ $(BASH) scripts/resources/success-message.sh "ROOK UN-INSTALLED"
 
-##   rook.show-info     Print info about the current Rook install/config.
+##   rook.showinfo     Print info about the current Rook install/config.
 rook.showinfo:
 	@ echo ''
 	@ $(MAKE) rook.print-config-branch.%
@@ -186,7 +186,7 @@ rook.dashboard-fwd:
 rook.restart-operator:
 	@ $(BASH) scripts/rook/restart-operator.sh
 
-##   rook.watch-pods       Watch Rook pods with `watch`
+##   rook.watch-pods       Watch Rook pods with ${CMD}watch${NON}
 rook.watch-pods:
 	@ watch --no-title kubectl --namespace $(ROOK_NAMESPACE) get pods